Steam-boiler.



HENRY D. KELLY, OF KANSAS CITY, MISSOURI.

STEAM-BOILER.

Application filed. June 8, 1914, Serial No. 843,662. Renewed May 13,1916.

To all whom it may concern:

Be it known that I, HENRY D. KELLY, a citizen of the United States,residing at Kansas City, in the county of Jackson and State of Missouri,have invented certain new and useful Improvements in Steam-Boilers, ofwhich the following is a specification.

This invention relates to steam boilers, and my object is to producesimple, strong, durable, cheap and eflicient attachments, to be arrangedwithin and near the bottom of the boiler and upon the upper end of apipe for supplying the boiler with water, the purpose of the attachmentsbeing to minimize the danger of an explosion of the boiler by effectinga gradual transformation of the water supplied to the boiler into steam,as contemplated by my United States Patent for spray-header for boilers,numbered 1,087 ,242, dated February 17, 1914, my present object being toproduce a more eflicient header than the patented one above referred to.

Another object is to rovide the boiler with a series of low partltionsor riffles dividing the bottom of the boiler into a plurality ofcompartments adapted to be successively filled with water, the object ofthus partitioning the bottom being to provide an additional element ofsafety against explosion by preventing the quick flow of water over theentire surface of the bottom of the boiler, the provision of thepartitions or rifiles thus incidentally serving to gradually effect anincrease in the volume and pressure of steam generated instead of apractically instantaneous increase in the volume and pressure of thesteam as would occur if the water was permitted to instantly spread overthe entire bottom of the boiler when first admitted thereto.

With the objects named in view the invention consists in certain noveland peculiar features of construction and organization as hereinafterdescribed and claimed; and in order that it may be fully understood,reference is to be had to the accompanying drawing, in which:-

Figure 1, is a fragmentary perspective view of a boiler embodying theinvention.

Fig. 2, is an enlarged central vertical section of a header embodyingthe invention.

Fig. 3, is a horizontal section on the line III-III of Fig. 2.

In the said drawing, 1 is a boiler of any suitable or preferred type,and secured upon Specification of Letters Patent.

Patented Aug. 7, 1917.

Serial No. 97,445.

the bottom of the same are the partitions or rittles 2, 3, 4, and 5 ofgradually increasing height. 6 is a water supply pipe extending upthrough the bottom of the boiler and forming a water tight jointtherewith, in any suitable manner.

7 is a cylindrical header which is closed at its top and is providedcentrally with a pin 8 depending from its top to the plane of its lowerend or bottom 9, which bottom is provided with a series of outletopenings 10 and with a tubular portion 11 projecting upwardly into theheader and downwardly therefrom. The lower end of the tubular portion 11is internally threaded and its bore is of greater diameter than the pin8 which depends into the upper end of said bore and thus constricts thesame, and from said point of constriction the internal diameter of thetubular portion increases to the upper end of said portion, and to givethe header a constantly expanding passage, the combined capacity ofoutlet openings 10 is materially greater than the capacity fordischarge, of the passage of the said tubular portion.

In practice the water, under city pressure or other pressure, ispermitted to pass up through pipe 6 where it is impeded by the pin 8 andcaused to travel upwardly, and even if the pressure in the pipe 6 issulficient to cause the water to spurt up through portion 11 and impingeupon the top of the header, the size of the chamber of the latter willresult in deadening the force of and causing the water to escape quietlythrough the openings 10 and flow down the pipe 6 to the bottom of theboiler.

Assuming that the boiler stands at a steam generating temperature, itwill be apparent that the water flowing down the pipe 6 will at first bealmost instantly converted into steam upon coming in contact with thebottom of the boiler and that as in the patent hereinbefore identified,this results in the gradual increase in the volume and pressure of steamgenerated and also in the successive filling with water of compartmentsformed by the rifiles. By compelling each compartment to be filled withwater before any water can enter the next compartment, the rapidity ofgeneration of steam will be somewhat retarded and the rise in pressurewill consequently be gradual until all the compartments are filled,after which the riflles will of course be functionless.

series of chambers by rifiies rising difl erent distances from thebottom of the boiler, and means for supplying Water to the shallowestchamber formed by said rifiles.

In testimony whereof, I afliX my signa- 15 From the above description itWill be apparent that I have produced a steam boiler embodying thefeatures of advantage enumerated as desirable and Which may be modifiedin minor particulars Without departing from the spirit and scope orsacrificin ture, in the presence of tWo Witnesses. any of the advantagesof the appended HENRY D. KELLY. claim. I/Vitnesses I claim H. C.RODGERS, A boiler, partitioned at its bottom into a G. Y. THORPE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). O

